Four new tetranychidsPublished in Annals of the Entomological Society of America, in 1914, in volume 7, pages 354-365Created: 2011-06-04, modified: 2016-08-22
Some notes on parasitism of chrysopids in South CarolinaPublished in Canadian Entomologist, in 1914, in volume 46, pages 306-308Created: 2011-05-12, modified: 2017-01-06
A new spider mite from ArgentinaPublished in Proceedings of the Entomological Society of Washington, in 1943, in volume 45, pages 176-178Created: 2011-06-01, modified: 2011-06-21
A new spider mite (Acarina : Tetranychidae)Published in Proceedings of the Entomological Society of Washington, in 1952, in volume 54, pages 142-144Created: 2011-06-01, modified: 2011-06-21
The Texas citrus mite, a new speciesPublished in Proceedings of the Entomological Society of Washington, in 1935, in volume 37, pages 161-165Created: 2011-06-01, modified: 2011-06-21
McGregor on Birds from Norton SoundPublished in The Auk, in 1903, in volume 20, pages 319Created: 2013-03-08, modified: 2013-03-08
McGregor on New or Noteworthy Philippine BirdsPublished in The Auk, in 1918, in volume 35, pages 370Created: 2013-03-07, modified: 2013-03-08
The ubiquitous mite, a new species on citrusPublished in Proceedings of the Entomological Society of Washington, in 1932, in volume 34, pages 60-64Created: 2011-05-06, modified: 2011-06-21
A new spinning mite attacking raspberry in MichiganPublished in Proceedings of the Entomological Society of Washington, in 1931, in volume 33, pages 193-195Created: 2011-06-01, modified: 2011-06-21
A new spider mite from Virginia (Acarina : Tetranychidae)Published in Proceedings of the Entomological Society of Washington, in 1941, in volume 43, pages 223-225Created: 2011-06-01, modified: 2011-06-21
The avocado mite of California, a new speciesPublished in Proceedings of the Entomological Society of Washington, in 1941, in volume 43, pages 85-88Created: 2011-06-01, modified: 2011-06-21
The Taxonomic Status Of The So called "common Red Spider."Published in Proc Ent Soc Washington, in 1942, in volume 44, pages 26-28Created: 2011-06-10, modified: 2011-06-21
A new mallophaganPublished in Entomological News, in 1912, in volume 23, pages 305-306Created: 2011-01-31, modified: 2021-04-05
A new spinning mite attacking Asparagus plumosus in FloridaPublished in Proceedings of the Entomological Society of Washington, in 1930, in volume 32, pages 161-163Created: 2011-06-01, modified: 2011-06-21
A new spinning mite on citrus at Yuma, ArizonaPublished in Proceedings of the Entomological Society of Washington, in 1934, in volume 36, pages 256-259Created: 2011-06-01, modified: 2011-06-21
The false spider mite, Brevipalpus lewisi McGregor-a potential pest of English walnutPublished in Pan-Pacific Entomologist, in 1956, in volume 32, pages 93-94Created: 2018-08-12, modified: 2018-08-12
Descriptions of two new species of spinning mitesPublished in Proceedings of the Entomological Society of Washington, in 1928, in volume 30, pages 11-15Created: 2011-06-01, modified: 2011-06-21
Descriptions of seven new species of red spidersPublished in Proceedings of the United States National Museum, in 1917, in volume 51, pages 581-590Created: 2010-11-20, modified: 2017-01-06
A new genus and species of tetranychid mite from CaliforniaPublished in Proceedings of the Entomological Society of Washington, in 1945, in volume 47, pages 100-102Created: 2011-06-01, modified: 2011-06-21
A new spider mite on citrus in southern California (Acarina: Tetranychidae)Published in Proceedings of the Entomological Society of Washington, in 1943, in volume 45, pages 127-129Created: 2011-05-06, modified: 2011-06-21
A new spinning mite attacking strawberry on the mid-Atlantic coastPublished in Proceedings of the Entomological Society of Washington, in 1941, in volume 43, pages 26-28Created: 2011-06-01, modified: 2011-06-21
Eliminating an Avian Pest (House Sparrow 'Passer Domesticus') Population: The Role of Trapping at a Homestead ScalePublished in Victorian Naturalist, in 2008, in volume 125, issue 1, pages 4-10Created: 2017-10-12, modified: 2017-10-12
A NEW FORM OF ASTRAGALUS MOLLISSIMUSPublished in Rhodora, in 1960, in volume 62, issue 736, pages 116Created: 2016-07-19, modified: 2016-07-19
The citrus mite named and described for the first timePublished in Annals of the Entomological Society of America, in 1916, in volume 9, pages 284-288Created: 2010-11-20, modified: 2016-08-22
McGregor's 'A Manual of Philippine Birds'Published in The Auk, in 1910, in volume 27, pages 237-238Created: 2013-03-07, modified: 2013-03-08
The red spiders of America and a few European species likely to be introducedPublished in Proceedings of the U. S. National Museum, in 1919, in volume 56, pages 641-679Created: 2011-06-02, modified: 2017-01-06
Description of a New Ammodramus from Lower CaliforniaPublished in The Auk, in 1898, in volume 15, pages 265-267Created: 2013-03-08, modified: 2013-03-08
Mollusks collected by R. C. McGregor in northern CaliforniaPublished in Nautilis, in 1899, in volume 13, pages 64-67Created: 2013-09-28, modified: 2013-09-28
Lipeurus dovei nom. novPublished in Psyche, in 1918, in volume 25, pages 46Created: 2011-01-31, modified: 2011-06-21
The specific identity of the American date mite; description of two new species of ParatetranychusPublished in Proceedings of the Entomological Society of Washington, in 1939, in volume 41, pages 247-256Created: 2011-05-06, modified: 2011-06-21
Junco ridgwayi in ColoradoPublished in The Auk, in 1893, in volume 10, pages 205-206Created: 2013-03-08, modified: 2013-03-08
Young Plumages of Mexican BirdsPublished in The Auk, in 1898, in volume 15, pages 264-265Created: 2013-03-08, modified: 2013-03-08
Note on Speotyto Cunicularia Obscura StephensPublished in The Auk, in 1898, in volume 15, pages 187Created: 2013-03-08, modified: 2013-03-08
Two Varieties of Cystopteris fragilisPublished in American Fern Journal, in 1950, in volume 40, issue 3, pages 201Created: 2017-04-23, modified: 2017-04-23
Notes on the occurrence of 'Oligonychus milleri' (McGregor) and 'O. Coffeae' (Nietner) (Acari: Tetranychidae) in AustraliaPublished in Australian entomological magazine, in 1985, in volume 12, issue 3/4, pages 69-70Created: 2022-05-09, modified: 2022-05-09
Three new Mallophaga from North American birdsPublished in Entomological News, in 1917, in volume 28, pages 433-437Created: 2011-01-31, modified: 2021-04-05
New and interesting vascular plant records from KansasPublished in Rhodora, in 1960, in volume 62, issue 736, pages 93-95Created: 2014-06-16, modified: 2016-07-26
McGregor's 'Index to the Genera of Birds'Published in The Auk, in 1920, in volume 37, pages 471-472Created: 2013-03-08, modified: 2013-03-08
Panicum capillare L. var. barbipulvinatum (Nash) comb. novPublished in Phytologia, in 1984, in volume 55, issue 4, pages 256Created: 2016-05-06, modified: 2016-05-06
Devonian spores from Melville Island, Canadian Arctic ArchipelagoPublished in Palaeontology, in 1960, in volume 3, issue 1, pages 26-44Created: 2016-04-23, modified: 2016-04-23
I.—Notes on Birds observed at ErzerumPublished in Ibis, in 1917, in volume 5, issue 1, pages 1-30Created: 2024-03-16, modified: 2024-03-16
VASCULAR PLANTS NEW TO KANSASPublished in Sida, Contributions To Botany, in 1998, in volume 18, issue 2, pages 593-604Created: 2015-12-02, modified: 2015-12-02
Camelina rumelica, another weedy mustard established in North AmericaPublished in Phytologia, in 1984, in volume 55, issue 4, pages 227-228Created: 2017-03-08, modified: 2017-03-08
Rediscovery of Paronychia argyrocoma, var. albimontana at Newburyport, MassachusettsPublished in Rhodora, in 1945, in volume 47, issue 555, pages 90-91Created: 2016-07-19, modified: 2016-07-19
Lipeurus dovei McGregor, a synonym of Lipeurus caponis (Linnaeus)Published in Proceedings of The Entomological Society of Washington, in 1955, in volume 57, pages 74Created: 2011-01-31, modified: 2011-06-21
Description of a new species of Prionochilus from the Highlands of LuzonPublished in Philippine Journal of Science, in 1915, in volume 9, issue D, pages 531-533Created: 2015-04-22, modified: 2015-04-22
New Polyclads from Monterey Bay, CaliforniaPublished in Proceedings of The Academy of Natural Sciences of Philadelphia, in 1912, in volume 64, pages 455-488Created: 2013-03-02, modified: 2013-03-02
Eight new Mallophaga of the genus Lipeurus from North American birdsPublished in Psyche, in 1917, in volume 24, pages 105-117Created: 2011-01-31, modified: 2017-01-06
New plant records from KansasPublished in Rhodora, in 1961, in volume 63, issue 749, pages 146-148Created: 2014-06-16, modified: 2016-07-26
Taxonomy and ecology of Kansas HepaticeaPublished in The University of Kansas Science Bulletin, in 1955, in volume 37, issue 1, pages 55-141Created: 2010-01-12, modified: 2023-02-16